Abstract: The exposure device is especially intended for use with the contact print of circuit patterns on printed circuit boards, and is composed of a tubular light source extending with the length thereof throughout the exposure field width and disposed in a housing light-permeable over the exposure field, with the light source being disposed within a reflector open toward the exposure field and a light-directing grid covered by the side flanks of the reflector being located underneath the light source, and a heat insulating plate being provided underneath the light directing grid.

Abstract: The equipment is intended for exposing both side of printed circuit plates by means of a contact print. The equipment comprises a master copy and printed circuit plates holder in a rack provided with feeding elements and guided in parallel between two light sources and comprising respectively one portion above and below the exposure plane. The holder is formed of a dual frame (1) the two frame portions 2,2' of which are formed to be moved part and together relative to one another and in parallel to one another and while remaining in a position parallel with respect to one another. Located in the frame portions (2,2') of the dual frame (1) is respectively one transparency (4) framed by a frame (5) provided at least on one side thereof with alignment elements (15), with suction ports (7) being provided in its counterdirected surfaces (6) along the circumferential edges thereof.